The film tells the story of the veteran Du Chuan who was ordered to reorganize the reconnaissance platoon to carry out harassment missions deep behind enemy lines during the War to Resist U.S. Aggression and Aid Korea. For the survival of the main force, the Volunteer Army's third reconnaissance platoon rushed forward, and with fearless courage and the belief of living and dying, they built a flesh-and-blood Great Wall to block the enemy's steel torrent.